4 * Copyright (C) 2009 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include "audiodevice.h"
26 #include "bcsignals.h"
27 #include "condition.h"
29 #include "edlsession.h"
32 #include "playbackengine.h"
33 #include "preferences.h"
34 #include "preferencesthread.h"
35 #include "renderengine.h"
36 #include "mainsession.h"
38 #include "transportque.h"
39 #include "videodevice.h"
41 #include "workarounds.h"
45 RenderEngine::RenderEngine(PlaybackEngine *playback_engine,
46 Preferences *preferences,
51 this->playback_engine = playback_engine;
52 this->output = output;
53 this->is_nested = is_nested;
56 config = new PlaybackConfig;
62 this->preferences = new Preferences;
63 this->command = new TransportCommand;
64 this->preferences->copy_from(preferences);
69 mwindow = !playback_engine ? 0 : playback_engine->mwindow;
71 input_lock = new Condition(1, "RenderEngine::input_lock");
72 start_lock = new Condition(1, "RenderEngine::start_lock");
73 output_lock = new Condition(1, "RenderEngine::output_lock");
74 render_active = new Condition(1,"RenderEngine::render_active");
75 interrupt_lock = new Mutex("RenderEngine::interrupt_lock");
76 first_frame_lock = new Condition(1, "RenderEngine::first_frame_lock");
79 RenderEngine::~RenderEngine()
84 if(arender) delete arender;
85 if(vrender) delete vrender;
89 delete interrupt_lock;
90 delete first_frame_lock;
92 edl->Garbage::remove_user();
95 EDL* RenderEngine::get_edl()
97 // return command->get_edl();
101 int RenderEngine::arm_command(TransportCommand *command)
104 // Prevent this renderengine from accepting another command until finished.
105 // Since the renderengine is often deleted after the input_lock command it must
106 // be locked here as well as in the calling routine.
107 if(debug) printf("RenderEngine::arm_command %d\n", __LINE__);
110 input_lock->lock("RenderEngine::arm_command");
115 edl->create_objects();
116 edl->copy_all(command->get_edl());
118 this->command->copy_from(command);
120 // Fix background rendering asset to use current dimensions and ignore
122 preferences->brender_asset->frame_rate = command->get_edl()->session->frame_rate;
123 preferences->brender_asset->width = command->get_edl()->session->output_w;
124 preferences->brender_asset->height = command->get_edl()->session->output_h;
125 preferences->brender_asset->use_header = 0;
126 preferences->brender_asset->layers = 1;
127 preferences->brender_asset->video_data = 1;
132 // Retool configuration for this node
133 this->config->copy_from(command->get_edl()->session->playback_config);
134 VideoOutConfig *vconfig = this->config->vconfig;
135 AudioOutConfig *aconfig = this->config->aconfig;
136 if(command->realtime)
138 if(command->single_frame() && vconfig->driver != PLAYBACK_X11_GL)
140 vconfig->driver = PLAYBACK_X11;
145 vconfig->driver = PLAYBACK_X11;
154 fragment_len = aconfig->fragment_size;
155 // Larger of audio_module_fragment and fragment length adjusted for speed
156 // Extra memory must be allocated for rendering slow motion.
157 float speed = command->get_speed();
158 adjusted_fragment_len = speed >= 1.0 ?
159 (int64_t)(aconfig->fragment_size * speed + 0.5) :
160 (int64_t)(aconfig->fragment_size / speed + 0.5) ;
161 if(adjusted_fragment_len < aconfig->fragment_size)
162 adjusted_fragment_len = aconfig->fragment_size;
165 // Set lock so audio doesn't start until video has started.
168 while(first_frame_lock->get_value() > 0)
169 first_frame_lock->lock("RenderEngine::arm_command");
172 // Set lock so audio doesn't wait for video which is never to come.
174 while(first_frame_lock->get_value() <= 0)
175 first_frame_lock->unlock();
179 create_render_threads();
180 arm_render_threads();
181 if(debug) printf("RenderEngine::arm_command %d\n", __LINE__);
186 void RenderEngine::get_duty()
191 //printf("RenderEngine::get_duty %d\n", __LINE__);
192 if(!command->single_frame() &&
193 get_edl()->tracks->playable_audio_tracks() &&
194 get_edl()->session->audio_channels)
199 //printf("RenderEngine::get_duty %d\n", __LINE__);
200 if(get_edl()->tracks->playable_video_tracks())
202 //printf("RenderEngine::get_duty %d\n", __LINE__);
207 void RenderEngine::create_render_threads()
209 if(do_video && !vrender)
211 vrender = new VRender(this);
214 if(do_audio && !arender)
216 arender = new ARender(this);
221 int RenderEngine::get_output_w()
223 return get_edl()->session->output_w;
226 int RenderEngine::get_output_h()
228 return get_edl()->session->output_h;
231 int RenderEngine::brender_available(int position, int direction)
235 int64_t corrected_position = position;
236 if(direction == PLAY_REVERSE)
237 corrected_position--;
238 return playback_engine->brender_available(corrected_position);
245 CICache* RenderEngine::get_acache()
248 return playback_engine->audio_cache;
253 CICache* RenderEngine::get_vcache()
256 return playback_engine->video_cache;
261 void RenderEngine::set_acache(CICache *cache)
263 this->audio_cache = cache;
266 void RenderEngine::set_vcache(CICache *cache)
268 this->video_cache = cache;
272 double RenderEngine::get_tracking_position()
275 return playback_engine->get_tracking_position();
280 int RenderEngine::open_output()
282 if(command->realtime && !is_nested)
287 audio = new AudioDevice(mwindow);
292 video = new VideoDevice(mwindow);
295 // Initialize sharing
299 if(do_audio && do_video)
301 video->set_adevice(audio);
302 audio->set_vdevice(video);
307 // Retool playback configuration
310 if(audio->open_output(config->aconfig,
311 get_edl()->session->sample_rate,
312 adjusted_fragment_len,
313 get_edl()->session->audio_channels,
314 get_edl()->session->real_time_playback))
318 audio->set_software_positioning(
319 get_edl()->session->playback_software_position);
320 audio->start_playback();
326 video->open_output(config->vconfig,
327 get_edl()->session->frame_rate,
331 command->single_frame());
332 video->set_quality(80);
333 video->set_cpus(preferences->processors);
340 void RenderEngine::reset_sync_position()
345 int64_t RenderEngine::sync_position()
348 // No danger of race conditions because the output devices are closed after all
352 return audio->current_position();
357 int64_t result = timer.get_scaled_difference(
358 get_edl()->session->sample_rate);
365 int RenderEngine::start_command()
367 if(command->realtime && !is_nested)
369 interrupt_lock->lock("RenderEngine::start_command");
370 start_lock->lock("RenderEngine::start_command 1");
372 start_lock->lock("RenderEngine::start_command 2");
373 start_lock->unlock();
378 void RenderEngine::arm_render_threads()
382 arender->arm_command();
387 vrender->arm_command();
392 void RenderEngine::start_render_threads()
394 // Synchronization timer. Gets reset once again after the first video frame.
399 arender->start_command();
404 vrender->start_command();
408 void RenderEngine::update_framerate(float framerate)
410 playback_engine->mwindow->session->actual_frame_rate = framerate;
411 playback_engine->mwindow->preferences_thread->update_framerate();
414 void RenderEngine::wait_render_threads()
418 arender->Thread::join();
423 vrender->Thread::join();
427 void RenderEngine::interrupt_playback()
429 interrupt_lock->lock("RenderEngine::interrupt_playback");
431 if(do_audio && arender)
433 arender->interrupt_playback();
436 if(do_video && vrender)
438 vrender->interrupt_playback();
440 interrupt_lock->unlock();
443 int RenderEngine::close_output()
445 // Nested engines share devices
468 void RenderEngine::get_output_levels(double *levels, int64_t position)
472 int history_entry = arender->get_history_number(arender->level_samples,
474 for(int i = 0; i < MAXCHANNELS; i++)
476 if(arender->audio_out[i])
477 levels[i] = arender->level_history[i][history_entry];
482 void RenderEngine::get_module_levels(ArrayList<double> *module_levels, int64_t position)
486 for(int i = 0; i < arender->total_modules; i++)
488 //printf("RenderEngine::get_module_levels %p %p\n", ((AModule*)arender->modules[i]), ((AModule*)arender->modules[i])->level_samples);
489 int history_entry = arender->get_history_number(((AModule*)arender->modules[i])->level_samples, position);
491 module_levels->append(((AModule*)arender->modules[i])->level_history[history_entry]);
500 void RenderEngine::run()
502 render_active->lock("RenderEngine::run");
503 start_render_threads();
504 start_lock->unlock();
505 interrupt_lock->unlock();
507 wait_render_threads();
509 interrupt_lock->lock("RenderEngine::run");
514 playback_engine->tracking_position = playback_engine->get_tracking_position();
519 // Fix the tracking position
522 if(command->command == CURRENT_FRAME)
524 //printf("RenderEngine::run 4.1 %d\n", playback_engine->tracking_position);
525 playback_engine->tracking_position = command->playbackstart;
529 // Make sure transport doesn't issue a pause command next
530 //printf("RenderEngine::run 4.1 %d\n", playback_engine->tracking_position);
534 playback_engine->tracking_position =
535 (double)arender->current_position /
536 command->get_edl()->session->sample_rate;
540 playback_engine->tracking_position =
541 (double)vrender->current_position /
542 command->get_edl()->session->frame_rate;
546 if(!interrupted) playback_engine->command->command = STOP;
547 playback_engine->stop_tracking();
550 playback_engine->is_playing_back = 0;
553 input_lock->unlock();
554 interrupt_lock->unlock();
555 render_active->unlock();
558 void RenderEngine::wait_done()
560 render_active->lock("RenderEngine::wait_done");
561 render_active->unlock();